The quick responses on this group are great! Thanks for the help so far.
The content is not static. The sites in question run e-commerce. We could
look at
setting up access from both servers to the same DB server over an internal
network ...
so that would answer that objection to the solution you offered.
I started by asking questions on a different group about round-robin DNS.
What I was
told was that since we don't control anyone else's DNS caching settings (our
TTL entries
etc. are really only suggestions) that when one T1 goes down & we change the
DNS
settings to point to only the other line clients & other DNS servers would
still try to
access the downed T1. Is this accurate as far as you know? If round robin
DNS will
provide fault-tolerance, that's great. If not ... we need to look elsewhere.
Thanks!
--
Daniel Wilson, BSCS, MCP
Application Developer
http://www.compusoftsolutions.com/
Vijay Ramcharan wrote:
> I believe what you're looking for is a way to load balance traffic to
> your web servers. You also wish to achieve a degree of fault tolerance
> in case one server goes down. If both servers have the same content and
> the content is static, you could use a feature called DNS round-robin
> which basically returns a list of IP addresses to a querying client for
> any single hostname. If one server becomes unavailable the client can
> use the other IP addresses given by the DNS server to access the same
> site. There's no routing protocol involved here and I don't think it's
> possible to do what you need using a routing protocol. The good thing
> about DNS round-robin is that the IP addresses of the web servers could
> be totally unrelated.
> This seems to be more of an application specific need for fault
> tolerance. If this is possible using a routing protocol I'd be happy if
> someone pointed out the error of my ways. I'm always open to
> suggestions.
>
> Vijay Ramcharan
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
> Daniel Wilson
> Sent: Thursday, June 07, 2001 9:39 AM
> To: [EMAIL PROTECTED]
> Subject: BGP for 2 T1's to one LAN [7:7511]
>
> We are trying to have the web servers in our LAN accessible to the
> internet via 2 T1's from different providers -- more for redundancy than
>
> load sharing, though that matters too. Currently we have 2 T1's, each
> giving us a different set of IP addresses. That just lets us put some
> sites on each T1 -- doesn't give us an ounce of redundancy.
>
> I've been told that if we get a router with 2 WIC's that can speak BGP
> (Cisco 2600 or better) that may solve our problem. I'm very new to
> routing, so can someone answer some basic questions?
>
> Is the idea with this solution that we will be running just one set of
> IP addresses? And that, because of BGP on our router, either ISP will
> be able to route traffic to that set of IPs on the T1 it provides?
>
> Thanks in advance.
>
> --
> Daniel Wilson, BSCS, MCP
> Application Developer
> http://www.compusoftsolutions.com/
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=7527&t=7511
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